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Ka D'Argo examines the contraceptive shield.
A contraceptive shield is a device for Leviathans that does not allow the reproductive process to continue. It was put into place on Moya to keep her from bearing a child when she was part of the experiments to create a Leviathan-Peacekeeper hybrid ("The Way We Weren't"), but was eventually disabled when Ka D'Argo damaged it during their efforts to examine Moya for potential damage, allowing for the conception of Talyn ("They've Got a Secret").